22142432321220 has 96 divisors (see below), whose sum is σ = 63453849072768. Its totient is φ = 5766130685952.

The previous prime is 22142432321197. The next prime is 22142432321279. The reversal of 22142432321220 is 2212323424122.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11537022 + ... + 13318698.

It is an arithmetic number, because the mean of its divisors is an integer number (660977594508).

Almost surely, 2^{22142432321220} is an apocalyptic number.

22142432321220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22142432321220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31726924536384).

22142432321220 is an abundant number, since it is smaller than the sum of its proper divisors (41311416751548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22142432321220 is a wasteful number, since it uses less digits than its factorization.

22142432321220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786549 (or 1786547 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 22142432321220 its reverse (2212323424122), we get a palindrome (24354755745342).

The spelling of 22142432321220 in words is "twenty-two trillion, one hundred forty-two billion, four hundred thirty-two million, three hundred twenty-one thousand, two hundred twenty".